Patent GB-190812307-A (GB)
Title: Improvements in and connected with Jacquards for Looms.
Inventor: HANSEN HANS ADOLF
Filed: 1908-06-06
Granted: 1909-02-04
Abstract: 12,307. Hansen, H. A. July 18, 19U7, [date applied for under Section 91 of Patents &c. Act, 1907]. Loom jacquards ; pattern chains.-Relates to twocylinder jacquards used for weaving table cloths, serviettes, &c. in continuous lengths, the centres b, Fig. 5, of each two pieces being interrupted by the borders u. The body and border cylinders a, t, Fig. 1, are moved horizontally by the forked arms of angular levers n, x, connected by rods m, v to a rod h, which has studs g sliding in guides w, k. Levers 14, 15, which have teeth 18, 19 and hooks 16, 17, are controlled by projections 24, 25 side by side on a "Gall" or pattern chain 22. When a high projection 25, Fig. 2, and a low projection 24 are beneath the teeth 18, 19, Fig. 1, the hook 17 enters a notch 11 in a sector 9 on the lever x, and locks this lever and the corresponding cylinder t in its outward position. When a high projection 24, Fig. 3, and a low projection 25 are beneath the teeth 19, 18, Fig. 1, the cylinder t is freed and the cylinder a is locked. In the former case, the stud in the guide w is held fixed and the rod h is rocked about it by a link f and lever d, and the cylinder a is moved horizontally into action. The pattern chain 22 passes over a wheel 23, which is rotated by a ratchet 34, actuated by a needle 30 controlled by the card that finishes a design. The ratchet 34 is connected to a lever 37, 39 on a fixed stud 38, the arm 39 being pivoted to a weighted lever 40, 42. When the needle 30 is actuated, a stud 31 thereon rocks a forked lever 33 provided with a stud 41, so that this stud no longer supports the arm 42 of the weighted lever 42, 40. This lever then rocks under the action of its weight 43, and the arm 40 is placed in position to be acted upon by a stud 45 on the rodf. The lever 37, 39 is thereby turned and the pattern-chain is advanced. A lever 48 having a pawl 47, under the action of a spring 49, acts on a tooth 50 on the lever 33 and retains this lever in position after it has been actuated by the needle 30. The arm 48, which has a stud 51, is at the same time moved in the direction of the arrow 52 into position to be actuated by the lever 37 on its return movement, so that the pawl 47 is thereby withdrawn from the tooth 50. The lever 33 then returns to its first position, and the arm 42 is again placed underneath the stud 41. When a certain link of the chain, formed with an inclined surface, comes beneath the levers 14, 15, the tooth 19 is raised and the tooth 18 allowed to fall, thereby bringing the border cylinder t into action. At ter half the border u has been woven, the pattern-cylinder t is driven in the reverse direction so as to weave the other half, two driving pawls or levers l, 54 connected by a rod 57 being used. The rod 57 is controlled by a lever 60 provided with a tooth 62 which rests on a cam-disk. The cam-disk is turned by a pawl 64, which has an arm 66 and a tooth 68 engaged by a catch lever 69. When the cylinder t first comes into operation, the tooth 62 rests on the middle of one of the cam projections or teeth 63. The first card on the cylinder t actuates a needle 72 and removes the catch-lever 69 from the tooth 68, so that a spring 67 depresses the arm 66 and the camdisk is turned, the tooth 62 being raised to the highest point of the cam-projection 63. The pawl l is thus thrown into operation. The arm x afterwards raises the arm 66. The last card on the cylinder t also actuates the needle 72, and the tooth 62 drops on to the lowest part of the cam-projection 63, the reversing-pawl 54 being thrown into operation. Finally, the first card on the cylinder t causes a further rotation of the cam-disk, and the tooth 62 again engages with the middle of a cam-projection 63, both pawls l, 54 being thrown out of action. The cylinder t is then thrown out of operation, the tooth 19 being allowed to fall. In order to allow the cylinder t to be used with the reversing-mechanism or not, as desired, both the first and last cards on this cylinder actuate the needle 30, four high links 24 being employed. The needle 30 is returned to its normal position, whether actuated by the cylinder a or t, by springs 75, 77, situated respectively between a needle-board 29 and a loose bow 73, and between the loose bow 73 and a bow 76 fast to the needle 30, which has also a fixed stud 74. The needles 72 may be provided with similar mechanism, and they are cranked round lifting-wires having double hooks, so as to be engaged by the knives at either side.